CN220021455U

CN220021455U - Battery device and electricity utilization device

Info

Publication number: CN220021455U
Application number: CN202320746840.7U
Authority: CN
Inventors: 陈爱明; 于东濛
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-11-14
Anticipated expiration: 2033-03-31

Abstract

The utility model discloses a battery device and an electricity utilization device. The battery device comprises a shell component, a battery and an elastic piece, wherein the shell component is provided with two side walls which are oppositely arranged, a containing space is arranged between the two side walls, the containing space is used for containing the battery, the battery is arranged in the containing space, and the elastic piece is arranged between the battery and the side walls. By arranging the elastic member between the battery and the opposite side walls of the housing assembly, a good fixing effect can be formed on the battery by utilizing the extrusion force between the elastic member and the battery and between the elastic member and the housing assembly, and the fixing method is simple to operate.

Description

Battery device and electricity utilization device

Technical Field

The utility model relates to the technical field of battery assembly, in particular to a battery device and an electric device.

Background

In the prior art, for a battery pack including a plurality of batteries, the plurality of batteries are often required to be fixed into a group, and then the plurality of batteries are connected in series or in parallel according to actual production requirements so as to meet corresponding working requirements. Common fixing methods at present comprise glue fixing and mechanical fixing.

For glue fixing, a plurality of batteries are required to be bonded through glue to form a battery pack; for mechanical fixation, the plurality of batteries need to be mechanically fastened by the cooperation of the upper and lower housings and the fastener to press-fix the plurality of batteries. However, the former is fixed by glue, and the latter is complicated to operate and easily damages the battery.

Disclosure of Invention

The utility model aims to provide a battery device and an electricity utilization device, and aims to solve the technical problem that the battery device is complex to operate in the prior art.

According to one aspect of the present utility model, a battery device is provided.

The battery device includes:

the battery pack comprises a shell assembly, a battery and a battery, wherein the shell assembly is provided with two side walls which are oppositely arranged, and an accommodating space is arranged between the two side walls and is used for accommodating the battery;

the battery is arranged in the accommodating space;

and the elastic piece is arranged between the battery and the side wall.

Optionally, the elastic element is used for fixing the battery.

Optionally, the battery has a first electrical value, and the elastic member has a first deformation; the battery has a second electrical value that is less than the first electrical value, the elastic member has a second amount of deformation, and the first amount of deformation is greater than the second amount of deformation.

Optionally, a rough layer is disposed on a surface of the side wall adjacent to the elastic member.

Optionally, the outer surface of the side wall is provided with a plurality of buffer parts, and a plurality of buffer parts are arranged on the surface of the side wall, which is away from one side of the battery, at intervals.

Optionally, the housing assembly includes:

a first housing assembly comprising two of said side walls having openings at ends thereof; the method comprises the steps of,

the second shell assembly is used for being covered on the opening.

Optionally, the battery device further comprises a separator, and the separator is arranged between the lugs of the adjacent batteries.

Optionally, the battery device further includes:

and the tensioning member is arranged around the periphery of the plurality of batteries and is used for enabling the plurality of batteries to form a battery pack.

Optionally, the tensioning member comprises an adhesive and/or a heat shrink film.

Optionally, the battery device further includes:

the battery pack comprises a connecting piece and an insulating piece, wherein the connecting piece is connected with a plurality of lugs of the batteries and is used for connecting the batteries in series or in parallel, and the insulating piece is arranged between the connecting piece and the batteries.

According to still another aspect of the present utility model, there is provided an electric device including the above-described battery device.

The utility model has the technical effect that by arranging the elastic piece between the battery and the two opposite side walls of the shell component, the elastic piece and the battery and the elastic piece and the shell component can be pressed to form a good fixing effect on the battery, and the fixing method is simple to operate.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is an internal schematic view of a battery device according to an embodiment of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is an external schematic view of a battery device according to an embodiment of the present utility model;

fig. 4 is an internal schematic view of another battery device according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a housing assembly; 11. a sidewall; 12. a second housing assembly; 13. a first housing assembly; 14. a buffer section; 2. an elastic member; 3. a battery; 4. a spacer; 5. an adhesive member; 6. a heat shrinkage film; 7. a connecting piece; 8. an insulating member; 9. an external connection piece.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

The utility model provides a battery device, which can be used for conveniently fixing a battery pack formed by single batteries 3 or a plurality of batteries 3, wherein the batteries 3 can be soft-packed batteries or hard-shell batteries.

As shown in fig. 1 to 4, the battery device includes:

a housing assembly 1, wherein the housing assembly 1 is provided with two opposite side walls 11, and a containing space is arranged between the two side walls 11 and is used for containing the battery 3;

a battery 3, wherein the battery 3 is arranged in the accommodating space;

an elastic member 2, the elastic member 2 being disposed between the battery 3 and the side wall 11.

As shown in fig. 1, the case assembly 1 has two opposite side walls 11, wherein the two side walls 11 may be two walls of the case assembly 1 in the thickness direction of the housed single battery 3 (X direction in fig. 1) or the thickness direction of a battery pack formed of a plurality of batteries 3, and the two side walls 11 may also be two walls of the case assembly 1 in the width direction of the housed single battery 3 (Y direction in fig. 1) or the width direction of the battery pack formed of a plurality of batteries 3, with a housing space formed between the two side walls 11, with which the batteries 3 can be housed.

As shown in fig. 1 and 4, the embodiment of the present utility model provides an elastic member 2 in a housing assembly 1, wherein the elastic member 2 may be an elastic material member, such as elastic rubber, elastic silica gel, etc.; the elastic member 2 may be an elastic member, such as a spring, a spring piece, or the like, so that the battery 3 can be fixed by elastic deformation of the elastic member or the elastic member.

Specifically, the elastic member 2 may be disposed between the battery 3 and the side wall 11, for example, when the battery 3 is disposed in the accommodating space, the elastic member 2 may be disposed between the two side walls 11 of the housing assembly 1 opposite to the battery 3 and the battery 3, for example, in fig. 1, the two elastic members 2 are respectively sandwiched between the two side walls 11 of the housing assembly 1 along the thickness direction (i.e., the X direction) of the battery 3 and the battery 3, so that the two elastic members 2 can form extrusion on the battery 3 from two opposite sides of the battery 3 to reliably fix the battery 3, thereby ensuring the fixing effect of the battery device, and the fixing structure is convenient to operate and has economic and controllable production cost.

In addition, the two elastic pieces 2 are arranged to extrude and fix the battery 3 from the two opposite sides of the battery 3, so that the stress of the battery 3 can be ensured to be even, the potential safety hazard caused by uneven stress of the battery 3 is avoided, the battery 3 fixed by the battery device can work normally, and the reliability of the battery device is improved.

In the present utility model, the number of elastic members may be optionally set according to the need, and is not limited herein.

In another embodiment, the elastic member 2 may be disposed between the plurality of batteries 3 in the accommodating space, so as to insulate and buffer the plurality of batteries 3 by using the elastic member 2, which is beneficial to ensuring a good heat dissipation effect during the operation of the battery device, and in case of an abnormal situation such as a collision impact, the elastic member 2 may also buffer the collision impact, so as to reliably protect the batteries 3.

Alternatively, the battery 3 has a first electric quantity value, and the elastic member 2 has a first deformation amount; the battery 3 has a second electric quantity value that is smaller than the first electric quantity value, the elastic member 2 has a second deformation amount, and the first deformation amount is larger than the second deformation amount.

Specifically, if the second electric quantity value is smaller than the first electric quantity value, the volume of the battery 3 corresponding to the second electric quantity value is smaller than the volume of the battery 3 corresponding to the first electric quantity value, that is, the volume of the battery 3 corresponding to the second electric quantity value is smaller, and the corresponding compression amount of the elastic member 2 is smaller, so that the second deformation amount of the elastic member 2 is smaller than the first deformation amount. If the second electric quantity value is larger than the first electric quantity value, the volume of the battery 3 corresponding to the second electric quantity value is also larger than the volume of the battery 3 corresponding to the first electric quantity value, namely the volume of the battery 3 corresponding to the second electric quantity value is larger, and the corresponding compression quantity of the elastic piece 2 is also larger, so that the second deformation quantity of the elastic piece 2 is larger than the first deformation quantity, and therefore, different electric quantity values of the battery 3 can be adapted by utilizing the elastic deformation of the elastic piece 2, and a good fixing effect on the battery 3 is ensured.

In addition, the thickness of the elastic piece 2 can be adjusted according to the lowest electric quantity value of the battery 3, so that the elastic piece 2 can be in a compressed state all the time, and the fixing effect of the elastic piece 2 on the battery 3 is ensured. During assembly, the battery 3 can be discharged to a lower electric quantity, then the elastic piece 2 is respectively arranged between the battery 3 and the two opposite side walls 11 of the shell assembly 1, and then the battery 3 is charged to a required electric quantity, so that a good fixing effect of the elastic piece 2 on the battery 3 can be ensured.

According to the embodiment of the utility model, the elastic pieces 2 are respectively arranged between the battery 3 and the two opposite side walls 11 of the shell assembly 1, so that the good fixing effect on the battery 3 can be ensured by utilizing the extrusion force between the elastic pieces 2 and the battery 3 and between the elastic pieces 2 and the shell assembly 1 in the charging and discharging process of the battery, and the fixing method is simple to operate, low in cost and suitable for various application requirements.

Optionally, the side wall 11 is provided with a roughened layer on a side surface thereof adjacent to the elastic member 2.

Specifically, the side wall 11 of the housing assembly 1 near the elastic member 2 is provided with a rough layer on one side surface, and the rough layer may be a rough area formed on the side wall 11 by using a processing technology to increase the surface roughness, or may be a rough area formed by selecting a material, for example, a matte material or a frosted material. Moreover, according to practical design requirements, the rough layer may be the complete surface of the side wall 11 facing the side of the elastic member 2, or may be only a partial area where the side wall 11 contacts the elastic member 2, so that friction force between the side wall 11 and the elastic member 2 can be enhanced by using the rough layer, so as to improve the fixing effect of the elastic member 2 on the battery 3.

In addition, according to actual design demand, can set up unilateral coarse layer, only one lateral wall 11 is close to one side of elastic component 2 and sets up coarse layer promptly, utilizes this coarse layer can strengthen the frictional force between lateral wall 11 and the elastic component 2 of this side, and then improves elastic component 2 to the fixed effect of battery 3, has also reduced the production degree of difficulty of this battery device simultaneously for production beat has improved production efficiency. The two sides of the battery device can be provided with rough layers, namely, the rough layers are respectively arranged on one sides, close to the elastic piece 2, of the two opposite side walls 11, so that the friction force between the two opposite side walls 11 and the elastic piece 2 can be further enhanced, the fixing effect of the elastic piece 2 on the battery 3 is enhanced from the two opposite directions, and the fixing effect of the battery device is further improved.

Alternatively, the outer surface of the side wall 11 is provided with a plurality of cushioning portions 14, and the plurality of cushioning portions 14 are uniformly arranged on the surface of the side wall 11 on the side facing away from the battery 3.

As shown in fig. 1 and 3, the second housing component 12 has a plurality of side walls 11, a plurality of buffer portions 14 may be disposed on the outer surface of the side walls 11 (i.e., the surface of the side walls 11 facing away from the battery 3), and the buffer portions 14 may have other structures such as grooves and ribs, so as to buffer part of the external force, thereby avoiding the external impact force from directly acting on the housing component 1 to affect the normal operation of the battery 3 inside, and ensuring the structural reliability of the battery device. Further, by providing the buffer portion 14 on the outer surface of the side wall 11, the overall rigidity of the case assembly 1 can be reinforced by the buffer portion 14, and the structural stability of the battery device can be improved.

The plurality of buffer portions 14 are uniformly arranged on the side wall 11, and the plurality of buffer portions 14 may be uniformly arranged on the plurality of side walls 11 of the second housing component 12, that is, the intervals between two adjacent buffer portions 14 on the same side wall 11 or all the side walls 11 are equal, so as to ensure a uniform buffer reinforcing effect; the plurality of cushioning portions 14 may be arranged in an array on the plurality of side walls 11 of the second housing assembly 12, and the cushioning reinforcement effect of the cushioning portions 14 can be ensured as well. And, can also adjust the specific position of the buffer part 14 on the side wall 11 according to the external impact direction, so as to ensure good buffering effect.

Optionally, the housing assembly 1 comprises a first housing assembly 13, the first housing assembly 13 comprising two side walls 11, the ends of the two side walls 11 being open; the method comprises the steps of,

a second housing assembly 12, the second housing assembly 12 being adapted to cover the opening.

As shown in fig. 3, the housing assembly 1 according to the embodiment of the present utility model may include a first housing assembly 13 and a second housing assembly 12, and an opening is formed at the end of two opposite side walls 11 of the first housing assembly 13, from which a battery pack formed of a single battery 3 or a plurality of batteries 3 and other devices such as an elastic member 2 can be conveniently disposed. And set up second housing component 12 lid and locate on this opening and seal first housing component 13, can guarantee this battery device's leakproofness, avoid in foreign matter such as dust, water stain enters into first housing component 13 from the opening, also avoid the foreign matter to fall into and cause the damage to battery 3, elastic component 2 or other devices in the first housing component 13.

The housing assembly 1 comprises a first housing assembly 13 and a second housing assembly 12, i.e. the housing assembly 1 is formed in a split design. On one hand, the assembly of other devices such as the battery 3, the elastic piece 2 and the like can be facilitated, and the assembly efficiency of the battery device is improved; on the other hand, the split type design of the housing assembly 1 is also convenient for respective molding, and even if the independent molding of the first housing assembly 13 and the second housing assembly 12 is facilitated, the mold opening difficulty and the molding difficulty of the housing assembly 1 are reduced, and the production efficiency of the battery device is also improved.

In addition, the first shell component 13 and the second shell component 12 can be made of insulating fireproof materials, so that the normal operation of the battery 3 in the shell component 1 can be ensured, and the overall safety of the battery device is improved. Moreover, according to the actual production equipment conditions, the first shell component 13 and the second shell component 12 can be formed through a blow molding process or an injection molding process and the like, so that the application range of the battery device is also improved.

Alternatively, the battery device may further include a plurality of the batteries 3, and in the case where a plurality of the batteries 3 are disposed in the housing space in the housing assembly 1, the elastic members 2 are respectively disposed between two of the side walls 11 and the adjacent batteries 3 so as to be capable of forming fixation for a plurality of the batteries 3 by the elastic members 2.

As shown in fig. 1 and 4, the battery device provided by the embodiment of the present utility model may include a plurality of batteries 3, and when the plurality of batteries 3 are provided in the housing assembly 1, the plurality of batteries 3 form a battery pack. The elastic piece 2 is arranged between the two side walls 11 and the adjacent batteries 3 respectively, so that the extrusion force between the elastic piece 2 and the batteries 3 and the extrusion force between the elastic piece 2 and the shell assembly 1 can be utilized, the good fixing effect on the plurality of batteries 3 can be ensured, and the fixing method is simple to operate, economic in cost, energy-saving and environment-friendly, and can be suitable for various application requirements.

Optionally, the battery device further comprises a separator 4, and the separator 4 is disposed between the tabs of the adjacent batteries 3.

As shown in fig. 1 and fig. 4, in the embodiment of the present utility model, a spacer 4 is further disposed between the tabs of the adjacent batteries 3, where the spacer 4 may be an elastic material, such as a sponge, and the spacer 4 is used to insulate the tabs of the adjacent batteries 3, so as to avoid abnormal situations such as short circuit between the tabs of the adjacent batteries 3, and ensure normal operation of the plurality of batteries 3. In addition, the arrangement of the isolating piece 4 can also provide certain supporting strength for other devices above the isolating piece, so that the arrangement of other devices is convenient.

Optionally, the battery device further includes a tightening member surrounding the outer circumferences of the plurality of the batteries 3, the tightening member being for forming the plurality of the batteries 3 into a battery pack.

As shown in fig. 2 and fig. 4, the periphery of the plurality of batteries 3 may be further provided with a tightening member, where the tightening member may be an adhesive piece 5 such as an adhesive tape or glue, a heat shrinkage film 6, a clamping or a combination of the foregoing, and the plurality of enclosed batteries 3 may be formed into a reliable battery pack by using the tightening member, so that the battery pack is conveniently fixed by the elastic piece 2, and the risk of scattering the plurality of batteries 3 in the subsequent fixing process is also reduced.

Optionally, the tensioning member comprises an adhesive 5 and/or a heat shrink film 6.

As shown in fig. 2 and fig. 4, the tensioning member provided by the embodiment of the utility model may include an adhesive 5 and a heat-shrinkable film 6, the adhesive 5 is sleeved on the periphery of the battery pack, and the heat-shrinkable film 6 is further provided on one side of the adhesive 5 away from the battery pack, i.e. after the enclosed plurality of batteries 3 are formed into the battery pack by the adhesive 5, the heat-shrinkable film 6 is sleeved and heated, so that the heat-shrinkable film 6 can be tightly sleeved on the outer side of the adhesive 5, thereby improving the whole of the battery pack, facilitating the subsequent fixing of the battery pack by the elastic member 2, and reducing the risk of scattering the plurality of batteries 3 in the subsequent fixing process. Wherein, according to actual production demand, the setting area of heat shrinkage film 6 can be adjusted, for example heat shrinkage film 6 can surround the whole region of periphery of bonding piece 5, and heat shrinkage film 6 can also surround the partial region of periphery of bonding piece 5.

In another embodiment, the tightening member may further include an adhesive 5 or a heat shrink film 6, that is, any one of the adhesive 5 and the heat shrink film 6 may be used alone to form a simple and convenient fixation for the battery pack, thereby reducing the production cost of the battery device.

Optionally, the battery device further includes a connecting member 7 and an insulating member 8, where the connecting member 7 is connected to the tabs of the plurality of batteries 3 and is used for connecting the plurality of batteries 3 in series or in parallel, and the insulating member 8 is disposed between the connecting member 7 and the plurality of batteries 3.

As shown in fig. 4, the battery device provided by the embodiment of the utility model may further include a connecting member 7 and an insulating member 8, where the connecting member 7 is connected with the tabs of the plurality of batteries 3, so as to be capable of leading out the tabs of the plurality of batteries 3, and facilitate the series connection or parallel connection of the plurality of batteries 3 through a welding process or the like, so as to meet the working requirements of the corresponding battery device. And, can also set up insulating part 8 between the surface of connecting piece 7 and a plurality of battery 3, utilize insulating part 8 can keep apart the surface of connecting piece 7 and a plurality of battery 3, avoid taking place unusual such as short circuit, also guaranteed the normal work of this battery device.

As shown in fig. 4, the battery device provided in the embodiment of the present utility model may further include an external connector 9, and the external connector 9 may include a battery management system and a wire harness, so that connection between the battery pack and external devices in the housing assembly 1 can be achieved through the external connector 9.

The utility model also provides an electric device which comprises the battery device, the electric device has the technical effects of the battery device, the electric device can be a vehicle, a ship, an unmanned aerial vehicle, an energy storage cabinet and the like, and the battery in the electric device can be well fixed through the battery device.

The foregoing embodiments mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in consideration of brevity of line text, no further description is given here.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims

1. A battery device, characterized by comprising:

the battery pack comprises a shell assembly (1), wherein the shell assembly (1) is provided with two side walls (11) which are oppositely arranged, and a containing space is arranged between the two side walls (11) and is used for containing a battery (3);

the battery (3) is arranged in the accommodating space;

and the elastic piece (2) is arranged between the battery (3) and the side wall (11).

2. A battery device according to claim 1, characterized in that the elastic member (2) has a first deformation if the battery (3) has a first electric quantity value; if the battery (3) has a second electric quantity value, the second electric quantity value is smaller than the first electric quantity value, the elastic piece (2) has a second deformation amount, and the first deformation amount is larger than the second deformation amount.

3. A battery device according to claim 1, characterized in that the side wall (11) is provided with a roughened layer on a side surface adjacent to the elastic member (2).

4. A battery device according to claim 1, characterized in that the outer surface of the side wall (11) is provided with a plurality of cushioning parts (14), a plurality of the cushioning parts (14) being arranged at intervals on the surface of the side wall (11) facing away from the battery (3).

5. A battery device according to claim 1, wherein the housing assembly (1) comprises:

-a first housing assembly (13), said first housing assembly (13) comprising two said side walls (11), the ends of both said side walls (11) being open; the method comprises the steps of,

and the second shell assembly (12) is used for covering the opening.

6. A battery device according to claim 1, characterized in that the battery device further comprises a spacer (4), the spacer (4) being arranged between the tabs of adjacent batteries (3).

7. The battery device according to claim 1, further comprising:

and a tightening member provided around the outer circumferences of the plurality of batteries (3) for forming the plurality of batteries (3) into a battery pack.

8. A battery device according to claim 7, characterized in that the tightening member comprises an adhesive (5) and/or a heat shrink film (6).

9. The battery device according to claim 7, further comprising:

the battery pack comprises a connecting piece (7) and an insulating piece (8), wherein the connecting piece (7) is connected with a plurality of lugs of the batteries (3) and is used for connecting a plurality of the batteries (3) in series or in parallel, and the insulating piece (8) is arranged between the connecting piece (7) and a plurality of the batteries (3).

10. An electrical device comprising a battery device according to any one of claims 1 to 9.